<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>

  <body>
    <div id="app"></div>
    <template id="pengfan">
      <h2>{{fullName}}</h2>
      <h2>{{result}}</h2>
      <h2>{{reverseMessage}}</h2>
    </template>
    <script src="../js/vue.js"></script>
    <script>
      Vue.createApp({
        template: "#pengfan",
        data() {
          return {
            message: "Hello World",
            firstName: "Kobe",
            lastName: "Bryant",
            score: 90,
          };
        },
        computed: {
          //定义一个计算属性叫fullName
          fullName() {
            return this.firstName + " " + this.lastName;
          },
          result() {
            return this.score >= 60 ? "及格" : "不及格";
          },
          reverseMessage(){
              return this.message.split(" ").reverse().join(" ");
          }
        },
      }).mount("#app");
    </script>
  </body>
</html>
